2024 ICASSP A Novel Discrete Fractional Complex Hadamard Transform for Medical Image Encryption Zi-Chen Fan, Di Li, and Susanto Rahardja In ICASSP 2024-2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2024 HTML IMAGE Contrastive learning for deep tone mapping operator Di Li, Mou Wang, and Susanto Rahardja Signal Processing: Image Communication, 2024 HTML Code ISCAS Unsupervised Image Enhancement via Contrastive Learning Di Li, and Susanto Rahardja In 2024 IEEE International Symposium on Circuits and Systems (ISCAS), 2024 HTML Code TCAS-I Efficient Computation for Discrete Fractional Hadamard Transform Zi-Chen Fan, Di Li, and Susanto Rahardja IEEE Transactions on Circuits and Systems I: Regular Papers, 2024 HTML TMM Rethinking Affine Transform for Efficient Image Enhancement: A Color Space Perspective Di Li, and Susanto Rahardja IEEE Transactions on Multimedia, 2024 HTML Code 2023 SPL Pure Number Discrete Fractional Complex Hadamard Transform Zi-Chen Fan, Di Li, and Susanto Rahardja IEEE Signal Processing Letters, 2023 HTML TMM Learning Deep Representations for Photo Retouching Di Li, and Susanto Rahardja IEEE Transactions on Multimedia, 2023 HTML Code MWSCAS LTM-GAN: A Light-Weight Generative Adversarial Net for Tone Mapping Di Li, and Susanto Rahardja In 2023 IEEE 66th International Midwest Symposium on Circuits and Systems (MWSCAS), 2023 HTML Code 2021 CMPB BSEResU-Net: An attention-based before-activation residual U-Net for retinal vessel segmentation Di Li, and Susanto Rahardja Computer Methods and Programs in Biomedicine, 2021 HTML Code 2019 ICIP Residual u-net for retinal vessel segmentation Di Li, Dhimas Arief Dharmawan, Boon Poh Ng, and Susanto Rahardja In 2019 IEEE International Conference on Image Processing (ICIP), 2019 HTML A new hybrid algorithm for retinal vessels segmentation on fundus images Dhimas Arief Dharmawan, Di Li, Boon Poh Ng, and Susanto Rahardja IEEE Access, 2019 HTML